Deleted Mailbox Database folder keep coming back Exchange 2016

I had to delete couple of newly created mailbox databases and their copies on exchange 2016 however, when i am deleted its folder first they wont deleted as they are used by another program, so I restart HostControllerService and then able to delete BUT within seconds they are coming back. I notice this was an issue with exchange 2013 but CU 1 fixed it. is it the same with exchange 2016 CU4?? I even renamed them to .old but then the actual database comes back still

I used Remove-MailboxDatabase -Identity "MyDatabase" for now I created the new databases on the same path so I wont have a way to test this unless i am on my test environment. thanks for the response tho i will try and get back soon

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